Ran a batch of Underwood 165 JHP on the range today and am spooked on the brass!

[4949shooter]

I think by flowing he means deformed. Pics will help.

I shot some Underwood 165 grain fmj a few months ago and they were good. Are they loaded to the same pressures as the JHP?

Was this perhaps an older box before Kevin had adjusted the pressure?

Just thinking out loud here.

I have had these two boxes of the JHP 165's for a little while now, the brass is marked Underwood not Star line so that are not that old. Only ran a few of the 165 JHP rounds to make certain they cycled properly as these were my carry rounds.
I  have been running the light Priv stuff or the 185 grain FMJ Underwoods mostly on the range.
I had the S&W out to set the new adjustable sights so I ran several type rounds today.

Good point. So much for that theory.

From the ballistics sheets it appears the Underwood hollowpoints are loaded hotter than the fmj rounds, or they are at least in the 165 grain weight. Perhaps Kevin should tone the JHP rounds back a notch to mirror the fmj rounds. And the fmj 's were far from weak!

Intercooler, you might want to make Kevin aware of this thread?

[Intercooler]

  I gave up telling him. My latest 245's had one not fully seated but the solution wasn't what I expected.

[4949shooter]

  I gave up telling him. My latest 245's had one not fully seated but the solution wasn't what I expected.

PM if you don't mind.

[tmwtrfwler]

Been shooting Underwood for a while now (almost exclusively the 180 grain FMJ at the range) with out an issue but this particular box of the 165 JHP flat spooked me!

Sorry to read this Ascension.  I just joined this site after picking up my first 10mm (Glock 20) last week.  I got it for a woods gun.  After a lot of reading I bought some Underwood 135 JHP's and 180 TMJ's (what i call FMJ's).

have you had any issues with the 180's or 135's?  Mine were purchased last week and delivered friday. 

Thanks

[DM1906]

Been shooting Underwood for a while now (almost exclusively the 180 grain FMJ at the range) with out an issue but this particular box of the 165 JHP flat spooked me!

Sorry to read this Ascension.  I just joined this site after picking up my first 10mm (Glock 20) last week.  I got it for a woods gun.  After a lot of reading I bought some Underwood 135 JHP's and 180 TMJ's (what i call FMJ's).

have you had any issues with the 180's or 135's?  Mine were purchased last week and delivered friday. 

Thanks

Welcome, tmwtrfwler.

There's a world of difference between the TMJ and FMJ bullets. FMJ is a thick copper cup with the lead core swaged into it, with an exposed lead base. The TMJ is a cast or swaged lead bullet, with copper (or other metal) electro-plated onto it. TMJ's are essentially a cast/swaged lead bullet, only with a "different" type of lube, and are usually sized similarly to cast (usually .001" or greater oversize). TMJ is a misnomer, in that they aren't jacketed, technically.

[tmwtrfwler]

Been shooting Underwood for a while now (almost exclusively the 180 grain FMJ at the range) with out an issue but this particular box of the 165 JHP flat spooked me!

Sorry to read this Ascension.  I just joined this site after picking up my first 10mm (Glock 20) last week.  I got it for a woods gun.  After a lot of reading I bought some Underwood 135 JHP's and 180 TMJ's (what i call FMJ's).

have you had any issues with the 180's or 135's?  Mine were purchased last week and delivered friday. 

Thanks

Welcome, tmwtrfwler.

There's a world of difference between the TMJ and FMJ bullets. FMJ is a thick copper cup with the lead core swaged into it, with an exposed lead base. The TMJ is a cast or swaged lead bullet, with copper (or other metal) electro-plated onto it. TMJ's are essentially a cast/swaged lead bullet, only with a "different" type of lube, and are usually sized similarly to cast (usually .001" or greater oversize). TMJ is a misnomer, in that they aren't jacketed, technically.

Good to know!  I'd not heard of TMJ's until I was looking at Underwood's site.  I have grown up shooting deer and waterfowl but got hooked on pistols and target/defensive shooting a few years ago.  I don't reload so my bullet knowledge (and components) knowledge is lagging compared to most on this site. 
 
I googled the difference and one guy had a good analogy. He said a FMJ was like a copper condom over lead.  Makes sense!

Thanks for educating me.  I look forward to learning more.

Have you any experience with the 135's or 180 TMJ's from Underwood?

[DM1906]

Been shooting Underwood for a while now (almost exclusively the 180 grain FMJ at the range) with out an issue but this particular box of the 165 JHP flat spooked me!

Sorry to read this Ascension.  I just joined this site after picking up my first 10mm (Glock 20) last week.  I got it for a woods gun.  After a lot of reading I bought some Underwood 135 JHP's and 180 TMJ's (what i call FMJ's).

have you had any issues with the 180's or 135's?  Mine were purchased last week and delivered friday. 

Thanks

Welcome, tmwtrfwler.

There's a world of difference between the TMJ and FMJ bullets. FMJ is a thick copper cup with the lead core swaged into it, with an exposed lead base. The TMJ is a cast or swaged lead bullet, with copper (or other metal) electro-plated onto it. TMJ's are essentially a cast/swaged lead bullet, only with a "different" type of lube, and are usually sized similarly to cast (usually .001" or greater oversize). TMJ is a misnomer, in that they aren't jacketed, technically.

Good to know!  I'd not heard of TMJ's until I was looking at Underwood's site.  I have grown up shooting deer and waterfowl but got hooked on pistols and target/defensive shooting a few years ago.  I don't reload so my bullet knowledge (and components) knowledge is lagging compared to most on this site. 
 
I googled the difference and one guy had a good analogy. He said a FMJ was like a copper condom over lead.  Makes sense!

Thanks for educating me.  I look forward to learning more.

Have you any experience with the 135's or 180 TMJ's from Underwood?

My experience with Underwood is very limited, compared to many folks here. I roll my own.

[Bozz10mm]

Good to know!  I'd not heard of TMJ's until I was looking at Underwood's site.  I have grown up shooting deer and waterfowl but got hooked on pistols and target/defensive shooting a few years ago.  I don't reload so my bullet knowledge (and components) knowledge is lagging compared to most on this site. 
 
I googled the difference and one guy had a good analogy. He said a FMJ was like a copper condom over lead.  Makes sense!

Thanks for educating me.  I look forward to learning more.

Have you any experience with the 135's or 180 TMJ's from Underwood?
[/quote]

I have not bought any of the 135's, but I have shot several hundred rounds of the Underwood 180gr TMJ with no problems and no signs of over pressure.  Same with the 165gr TMJ.   I also have a couple hundred rounds each of the 155, 165, and 180gr, JHP, but haven't fired any of that at all.

I am shooting an S&W 1006, so YMMV.

[Ascension]

I have ran a few boxes of the 185 FMJ Underwood without an issue. It was only about 5 or so rounds the one box of the 165 JHP's that seemed overly hot.
Today I went out with a buddy after Church and ran about 20 rounds of the 165 JHP out of another box I had without an issue that I could tell. However we were in a pasture and I was not able to find a single round of the brass ( and the reason I shot only the 2 mags then my junk steel case .380 and 9 mm cheap stuff today) .

[tmwtrfwler]

got to the range today with my new Glock 20 gen 4 and a box of Underwood 180 gr TMJ's.  Man those were so much better than the PNC 200gr I shot over the weekend.  They provided a noticable difference in how accurate I was with them and the feel of each shot.  These bullets are great.  No issues, no FTF / FTE, couldn't be happier.  All brass looked good at first glance. 

[The_Shadow]

tmwtrfwler, welcome to the forum!  What RSA (recoil rod/spring assembly) are you using?  Factory stock or other?

[tmwtrfwler]

tmwtrfwler, welcome to the forum!  What RSA (recoil rod/spring assembly) are you using?  Factory stock or other?

All stock. the brass ejected normally as expected.  of course in an indoor range it's hard to tell exactly but none came back at me.

[The_Shadow]

Thanks for your response, just making observations.  Many have had FTF issues with the gen4's, glad to hear yours is running with the Underwood stuff.

[tmwtrfwler]

i did have a FTF issue with the PNC 200 gr. as outlined in my previous posts in this thread.  That said, it was 2 of 10 mag while only having loaded 5 rounds.  It may have been my hand hitting the slide release or it could've been the gun?  don't know?   But today no issues at all.  so I've only got 100 rounds down range and can summarize: PNC - 2 FTF / Underwood 0 issues at all. 

I've got a lot more shooting to day before I say it was a legit FTF though. 

[RMM]

I have had a few "hot" Underwood 165 and 180 TMJ & JHP rounds myself.
Out of the 150+ I've fired, only one really smiled bad (the one in these pictures).  I have 5-10 that have light creases... the rest I have reloaded 4-6 times each at full power (but not nuclear) levels and they are still holding strong!  The only way I can justify this is that there are a few that slipped through with a little extra 800x, being the wonderful powder it is to meter and all.